B1652 – Seat Driver Recline Backward Circuit Open

The ODBII code B1652 indicates that there is an open circuit in the driver seat recline backward mechanism, meaning the system is not receiving the expected signal or power to operate the recline function.

The severity of ODBII code B1652 is moderate.

Common Causes For: B1651 Seat Driver Recline Backward Circuit Failure

• Faulty seat recline motor
• Open or damaged wiring harness
• Poor electrical connections
• Malfunctioning seat position sensor
• Failed body control module (BCM)
• Blown fuse related to the seat recline system
• Corrosion in connectors or terminals

Common misdiagnosis for B1652 Seat Driver Recline Backward Circuit Open

• Faulty seat recline motor
• Damaged wiring or connectors
• Malfunctioning seat position sensor
• Issues with the body control module (BCM)
• Problems with the power seat switch
• Faulty ground connection
• Incorrectly installed or loose seat assembly

Common Troubleshooting Steps

When dealing with an OBD-II code B1652, which indicates a “Seat Driver Recline Backward Circuit Open,” there are several common troubleshooting steps you can follow to diagnose and potentially resolve the issue. Here’s a structured approach:

• Check the Vehicle’s Manual: Refer to the vehicle’s service manual for specific information related to the B1652 code, including wiring diagrams and component locations.
• Visual Inspection: **Wiring and Connectors: Inspect the wiring harness and connectors associated with the driver seat recline mechanism. Look for any signs of damage, corrosion, or loose connections.
• **Seat Mechanism: Check the seat recline mechanism itself for any physical obstructions or damage.
• Test the Seat Recline Switch: **Functionality: Test the seat recline switch to ensure it is functioning properly. You can use a multimeter to check for continuity when the switch is activated.
• **Replace if Necessary: If the switch is faulty, replace it.
• Check for Power and Ground: **Power Supply: Use a multimeter to check if the seat recline motor is receiving power when the switch is activated.
• **Ground Connection: Ensure that the ground connection for the seat recline circuit is secure and free of corrosion.
• Test the Seat Recline Motor: **Direct Power Test: If the switch and wiring are good, test the seat recline motor by applying direct power to it. If the motor does not operate, it may need to be replaced.
• Scan for Additional Codes: Use an OBD-II scanner to check for any additional trouble codes that may provide more context or indicate related issues.
• Inspect the Body Control Module (BCM): If all other components check out, the issue may lie within the BCM. Inspect for any faults or issues with the module itself.
• Clear the Code and Test Drive: After performing the necessary repairs, clear the trouble code using an OBD-II scanner and take the vehicle for a test drive to see if the code returns.
• Consult a Professional: If the issue persists after following these steps, it may be best to consult a professional mechanic or technician who has experience with your specific vehicle make and model.Additional Tips: – Always ensure the vehicle is turned off and the battery is disconnected when working on electrical components to avoid shorts or shocks. – Document any changes or repairs made during the troubleshooting process for future reference. By following these steps, you should be able to identify and resolve the issue related to the B1652 code.